Quarterly report pursuant to Section 13 or 15(d)

9. Accrued Expenses (Tables)

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9. Accrued Expenses (Tables)
3 Months Ended
Apr. 01, 2017
Payables and Accruals [Abstract]  
Schedule of accrued expenses
    April 1,
2017
    December 31,
2016
 
Sales tax estimates, including interest   $ 4,839     $ 4,203  
Compensation and benefits     1,713       2,431  
Accrued incentive and rebate checks     1       358  
Accrued rent     244       263  
Warranty     22       26  
Accrued payables     859       570  
Deferred revenue     357       227  
Other     847       810  
    $ 8,882     $ 8,888